:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #eef2ff;
  --text: #1f2937;
  --muted: #6b7280;
  --brand: #1d4ed8;
  --brand-dark: #1e3a8a;
  --accent: #f59e0b;
  --success: #15803d;
  --danger: #b91c1c;
  --border: #dbe2ef;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.nav-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-4);
  display: flex;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.2px;
  color: var(--brand-dark);
}

.nav-links,
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-7);
}

.hero {
  background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 45%, #fef3c7 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 3rem);
  box-shadow: var(--shadow-md);
}

.hero h1 {
  margin-top: 0;
  margin-bottom: var(--space-4);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.15;
}

.lead {
  color: #334155;
  max-width: 70ch;
}

.section-grid {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.card h3,
.card h2 {
  margin-top: 0;
}

.cta {
  margin-top: var(--space-6);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  background: #0f172a;
  color: #e2e8f0;
}

.cta a { color: #f8fafc; }

.footer {
  margin-top: var(--space-7);
  border-top: 1px solid var(--border);
  padding-top: var(--space-5);
  color: var(--muted);
  font-size: 0.95rem;
}

.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

th, td {
  border-bottom: 1px solid var(--border);
  text-align: left;
  padding: 0.75rem;
  vertical-align: top;
}

th { background: #f8fafc; }

input, select, textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.7rem;
  margin: var(--space-2) 0 var(--space-4);
  background: #fff;
}

button,
.button {
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--brand);
  color: #fff;
  padding: 0.6rem 0.9rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-block;
}

button:hover,
.button:hover { background: var(--brand-dark); text-decoration: none; }

.button-outline {
  border: 1px solid var(--brand);
  color: var(--brand);
  background: transparent;
}

.inline { display: inline-block; }
.flash-error { color: var(--danger); }
.flash-success { color: var(--success); }
.small { font-size: 0.92rem; color: var(--muted); }

.category-section { margin-top: var(--space-6); }
.category-head h2 { margin-bottom: 0.2rem; }
.product-card h3 { margin-bottom: 0.4rem; }
.pill {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  color: var(--brand-dark);
  font-size: 0.82rem;
  margin-bottom: 0.5rem;
}
.spec-list {
  padding-left: 1.1rem;
  margin: 0.6rem 0 1rem;
}
.spec-list li { margin-bottom: 0.35rem; }

.page-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.page-title {
  margin: 0 0 var(--space-2);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
}

.quick-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.kpi-card .small { margin: 0; }
.kpi-value {
  margin: var(--space-2) 0 0;
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1.1;
}

.status-grid { margin-top: 0; margin-bottom: var(--space-5); }
.compact-card { padding: var(--space-4); }

.filter-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.filter-bar input,
.filter-bar select {
  margin-bottom: 0;
}

.filter-actions {
  display: flex;
  align-items: end;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border: 1px solid transparent;
}

.badge-success,
.badge-fulfilled {
  color: #166534;
  background: #dcfce7;
  border-color: #86efac;
}

.badge-requested {
  color: #92400e;
  background: #fef3c7;
  border-color: #fcd34d;
}

.badge-approved {
  color: #1d4ed8;
  background: #dbeafe;
  border-color: #93c5fd;
}

.badge-rejected {
  color: #991b1b;
  background: #fee2e2;
  border-color: #fca5a5;
}

.badge-muted {
  color: #4b5563;
  background: #f3f4f6;
  border-color: #d1d5db;
}

.row-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.inline-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.form-inline {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: var(--space-3);
}

.form-inline-tight {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form-inline-tight select,
.form-inline-tight button { margin: 0; }

.table-card { padding: 0; overflow: hidden; }

.danger { background: var(--danger); }
.danger:hover { background: #7f1d1d; }

.empty-state {
  text-align: center;
  padding: var(--space-6);
}

@media (max-width: 900px) {
  .form-inline {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .container { padding-top: var(--space-5); }
  .nav-wrap { padding: var(--space-3); }
  .hero { padding: var(--space-5); }

  .responsive-table thead {
    display: none;
  }

  .responsive-table,
  .responsive-table tbody,
  .responsive-table tr,
  .responsive-table td {
    display: block;
    width: 100%;
  }

  .responsive-table tr {
    border-bottom: 1px solid var(--border);
    padding: var(--space-2) 0;
  }

  .responsive-table td {
    border-bottom: 0;
    padding: 0.35rem 0.75rem;
  }

  .responsive-table td::before {
    content: attr(data-label);
    display: block;
    color: var(--muted);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.1rem;
  }
}